Vlan trunk from CISCO to MT doesn't work

RouterOS General
1

Hello I need help to configure a vlan trunk with a Cisco switch of our ISP.
ISP tells us only a little information about this:
89.xx.xx.81 address of Cisco switch port. It is configured with vlan trunk tag 203 speed / duplex auto
89.xx.xx.82 our WAN router MT

I do not know Cisco IOS anyone has experience on a link like this?

cetalfio

2

Did the ISP tell you that your traffic will be on VLAN 203?

3

Ok I’ve some more information:
ISP tells us only a little information about this:
89.xx.xx.81/29 address of ISP Cisco switch port. It is configured with speed / duplex auto
89.xx.xx.82/29 our WAN our router MT
boths are vlan id=203

I’ve set:
/interface vlan
add name=vlan203 vlan-id=203 interface=ether1 disabled=no use-service-tag=yes

/ip address
add address=89.xx.xx.82/29 interface=vlan203

/ip route
add gateway=89.xx.xx.81 check-gateway=ping

after that I’ve 8 static public IP to assign to LAN:
89.xx.xx.10/29

I can’t to ping gateway and 8.8.8.8

some idea?

CelticComms, yes our traffic will be through vlan 203

cetalfio

4

Set use-service-tag=no or uncheck it in Winbox.

5

Thanks CelticComms for your advice,
until I try to connect with vlan tag=203 I am not able to do a ping on my route ISP.

So I reset my router and did a standard configuration:
89.xx.xx.81/29 is the address of sfp ISP Cisco switch port. It is configured with speed / duplex auto and our route
89.xx.xx.82/29 our sfp1 on router MT

Now I can ping my route but somenting is wrong because I’ve more more latency from 50ms to 933 ms (1,5 Km fiber link).

cetalfio

6

I’m not sure what your config is now… My last post was indicating that you should removea particular setting - not remove the VLAN itself. To present a standard 802.1Q frame you should have use-service-tag=no.

7

Sure I try to set use-service-tag=no but so I still did not reach the gateway.

So I removed vlan setting and I have defined as my public address static interface SFP1 and I maskerade it for my lan.

In my current configuration I can reach the gateway, but with very high latencies. My isp does not provide me support and I do not know if the latency is due to misconfiguration and / or a problem on the fiber connection or an incompatibility between the two transceivers Cisco for them and MT for me.

cetalfio